Home / 100,870.85-151,306.28-99,142.85

Finding the Fourth Proportional to 100,870.85, 151,306.28 and 99,142.85

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Solution

The fourth proportional to 100,870.85, 151,306.28 and 99,142.85 is: 148,714.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,870.85 : 151,306.28 = 99,142.85 : x
  2. Step 2: Convert to fraction form
    100,870.85/151,306.28 = 99,142.85/x
  3. Step 3: Cross multiply
    100,870.85x = 151,306.28 × 99,142.85
  4. Step 4: Simplify right side
    100,870.85x = 15,000,935,326.38
  5. Step 5: Solve for x
    x = 15,000,935,326.38/100,870.85
  6. Step 6: Final answer
    x = 148,714.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.